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$NetBSD: patch-ce,v 1.1 2011/12/16 05:40:46 manu Exp $
Fetch secondary groups using sysctl(2) instead of /proc, to avoid
deadlocks
--- xlators/mount/fuse/src/fuse-helpers.c.orig 2011-11-14 14:46:02.000000000 +0100
+++ xlators/mount/fuse/src/fuse-helpers.c 2011-12-15 10:49:52.000000000 +0100
@@ -17,8 +17,11 @@
<http://www.gnu.org/licenses/>.
*/
#include "fuse-bridge.h"
+#ifdef __NetBSD__
+#include <sys/sysctl.h> /* for sysctl(2) */
+#endif /* __NetBSD__ */
xlator_t *
fuse_state_subvol (fuse_state_t *state)
{
@@ -134,10 +137,10 @@
return state;
}
-void
-frame_fill_groups (call_frame_t *frame)
+static void
+frame_fill_groups_proc (call_frame_t *frame)
{
char filename[128];
char line[128];
char *ptr = NULL;
@@ -184,8 +187,42 @@
fclose (fp);
return;
}
+#ifdef __NetBSD__
+static void
+frame_fill_groups_sysctl (call_frame_t *frame)
+{
+ int name[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, frame->root->pid };
+ size_t namelen = sizeof(name) / sizeof(*name);
+ struct kinfo_proc kp;
+ size_t kplen = sizeof(kp);
+ int i, ngroups;
+
+ if (sysctl(name, namelen, &kp, &kplen, NULL, 0) != 0)
+ return;
+
+ ngroups = MIN(kp.kp_eproc.e_ucred.cr_ngroups, GF_REQUEST_MAXGROUPS);
+
+ for (i = 0; i < ngroups; i++)
+ frame->root->groups[i] = kp.kp_eproc.e_ucred.cr_groups[i];
+ frame->root->ngrps = ngroups;
+
+
+ return;
+}
+#endif /* __NetBSD__ */
+
+void
+frame_fill_groups (call_frame_t *frame)
+{
+#if defined(linux)
+ frame_fill_groups_proc(frame);
+#elif defined(__NetBSD__)
+ frame_fill_groups_sysctl(frame);
+#endif
+ return;
+}
call_frame_t *
get_call_frame_for_req (fuse_state_t *state)
{
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